![]() ![]() The daily rainfall gauge network has varying density across the country,Īnd is in some places not dense enough to support a daily rainfall analysis. The complete monthly rainfall analysis becomes available at the end of the month. Have been scaled so that they sum to equal the corresponding monthly rainfallĪccordingly, the 'recalibrated' daily rainfall maps are only generated once The 'recalibrated' daily rainfall analyses are derived from grids which The ordinary daily and monthly rainfall analyses (see below) use differentĪnd in most cases sums of daily rainfall grids are only approximatelyĮqual to the corresponding monthly analyses. The 'recalibrated' daily rainfall products. Indicates when the analysis was produced.Īn additional set of daily rainfall analyses and maps is also available, Current and historical site data used in each of the daily or monthly analyses can be obtained through Climate Data Online or Weather station directory.Ī date stamp at the bottom right-hand corner of each map Approximately 80% of the site data is available after 40 days, reaching to around 97% after one year. Subsequent versions will tend to be more accurate,Īs they will be based on larger quality-controlled input datasetsĪnd will contain more data from non-real-time reporting sites. The schedule of updates provides an overview of how frequent each data type is updated,Īlthough additional unscheduled updates may occur from time to time. So there may be some differences in the fine detail betweenĪll analyses and maps are progressively updated over the following twelve months,Īs new data become available and as the data in the climate database are improved through quality control. The regional maps are based directly on the 0.05x0.05 degree grids, Sub-sampled at every fifth point to give an effective resolution of 0.25x0.25 degrees. The national map shown on the web is based on the 0.05x0.05 degree grid, Of the month, across a similar number of sites, using accumulated daily rainfall data for the month. Monthly analyses are carried out on the last day Daily and monthly rainfall mapsĭaily rainfall for the current day is the 24-hour total rainfallįrom 9am (local time) the day before, to 9am of the current day.Įach day at about 1:30pm AEST, rainfall values from up to 3000 sitesĪcross the country are analysed onto 0.25x0.25Īnd 0.05x0.05 degree grids with limited quality control. However, the broad use of 'rainfall' is firmly established in meteorology. In millimeters of liquid water depth over a specified period of time.įor Australia, rainfall is typically measured for a 24-hour period ending 9am local time. Usually taken as that amount measured by means of a (including the liquid equivalent of frozen Subsequent analysis in following days make use of late-arriving observations and more comprehensive quality control.Īccording to the American Meteorological Society's They are intended to provide a general overview of rainfall across AustraliaĪs quickly as possible after the observations are received. Real-time data with limited quality control. The analyses are initially produced automatically from The Australian Data Archive for Meteorology (ADAM). ![]() The rainfall analyses and associated maps use data contained in the
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